Ka taea e te Hoahoa EMC Kino te Whakararu i te Mahi: Ngā Tirohanga Matua mō ngā Kaihanga PCB SMT
He wāhanga nui te Hototahi Aukume Hiko (EMC) o te hoahoa me te huihuinga PCB, inā koa i roto i te huihuinga PCB SMT (Hangarau Mata-Maunga). I te mea ka iti haere, ka tere haere ngā taputapu, he mea nui te pupuri i ngā paerewa mahi teitei me te ārai i te pokanoa hikohiko (EMI) mō te mahi pono. Ka rukuhia e tēnei tuhinga ngā kaupapa matua mō te hoahoa EMC i roto i te huihuinga PCB SMT, me te arotahi ki ngā rautaki matua hei āwhina i te whakaiti i te EMI me te whakarite i te pono o te PCB.
He aha te Hototahitanga Aukume Hiko (EMC)?
Ko te Hototahi Aukume Hiko e pā ana ki te kaha o te PCB ki te mahi kia rite ki te tikanga me te kore e tukuna, e pāngia rānei e te pokanoa aukume hiko (EMI) ka taea te whakararuraru i tana mahi, i te whakahaere rānei o ngā taputapu tata. He mea nui te whakatutuki i te tutuki i ngā whakaritenga EMC, inā koa i roto i ngā ahumahi pēnei i te whakawhitiwhiti kōrero, te rererangi, te motuka, me ngā tono hauora, he mea nui te pono o te tohu me te pono o te pūnaha.
Ngā Kaupapa Matua mō te Hoahoa EMC i roto i te Huihuinga PCB SMT
Te Mārama ki ngā Pūtake o te EMI
Ko te taahiraa tuatahi i roto i te hoahoa EMC ko te tautuhi i ngā pūtake pea o te EMI. Ko ēnei pea:
- Ngā wāhanga whakawhiti tere-teitei pēnei i ngā pūmana iti, Ngā FPGA.
- Ngā ara iahiko tuku hiko.
- Ngā pūihi, ngā wāhanga tuku ahokore rānei.
- Ngā tohu auau teitei e tuku ana i te pūngao hikohiko.
Mā te mārama ki ēnei pūtake ka āwhina i te whakatakoto rautaki hei whakaiti, hei ārai rānei i te EMI kei pā ki te PCB, ki tōna taiao rānei.
Ngā Whatunga Whakatakotoranga me te Tohatoha Hiko
Ko te whakatakoto whenua tika tētahi o ngā huarahi tino whai hua hei ārai i te EMI i roto i te huihuinga PCB SMT. Mā te papa whenua kua hoahoatia pai ka whakaratohia he ara ātete iti mō ngā tohu kia hoki ki te pūtake, ka ārai i te horapa o te haruru puta noa i te poari. Hei tāpiri, mā ngā PDN kua hoahoatia kia āta whakaitihia te haruru o te pūtake hiko, ka kore ai e pumau te pūnaha.
- Papa Whenua TotokaKa whakaitihia te ara mō ngā ia hoki mai e te papa whenua tonu, kore e mutu, ā, ka tiakina te ara iahiko mai i te EMI o waho.
- Wehewehenga Papa HikoMā te wehewehe i ngā papa hiko ka taea te whakaiti i te hononga i waenga i ngā wāhanga haruru me ngā wāhanga tairongo o te PCB.
Ngā Tikanga Whakatakoto Ara me te Tahora
He mea nui te whakatakotoranga ara hei whakarite i te pono o te tohu me te whakaiti i te EMI. Ka taea te whakamahi i ngā tikanga whakatakotoranga e whai ake nei hei whakaiti i te EMI:
- Ara Poto, Ara TikaWhakaitihia te roa o ngā tohu auau-tiketike hei whakaiti i te irahiko me te whakawhitiwhiti kōrero.
- Āraitanga WhakahaeretiaMō ngā tohu tere-tiketike, kia mau tonu te aukati ōrite o ngā tohu hei karo i ngā whakaata me te whakaiti i te EMI.
- Ngā Takirua RerekētangaWhakamahia ngā takirua rerekētanga mō ngā tohu tere-tiketike hei whakaiti i te haruru me te whakapai ake i te pono o te tohu.
Te Whakamahinga o te Parepare me ngā Āpitihanga
Ko te ārai tetahi o ngā huarahi tino whai hua hei whakaiti i te EMI i roto i ngā ara iahiko tairongo. Ka taea te whakamahi i te ārai i te taumata wāhanga, i te taumata PCB rānei. Ko te tikanga he whakatakoto i tētahi rauemi kawe hiko huri noa i ngā wāhanga tairongo, i ngā wāhanga ara iahiko rānei hei aukati, hei mimiti rānei i te irahiko hiko kore e hiahiatia.
- Ngā Parenga ParahiKa taea te whakatakoto i te parahi, i ētahi atu rauemi kawe hiko rānei ki te taha o ngā wāhanga, ki te PCB katoa rānei hei mimiti i te EMI.
- Ngā Pakitara EMIMā te hiri i ngā takai me ngā gasket kawe hiko ka ārai i te turuturu EMI me ngā pokanoa o waho.
Te Wetewete i ngā Pūnga
He mea nui te wetewete i ngā pūnga hiko hei whakau i ngā pūtake hiko me te whakaiti i te haruru i ngā auau teitei. Mā te whakanoho i ngā pūnga hiko ki te taha o ngā pine hiko ka āwhina i te tātari i te haruru me te whakarite kia ma te tuku hiko ki ngā wāhanga tairongo.
- Te Whakanohonga PūngaWhakatakotoria ngā pūnga wetewete kia tata rawa ki ngā pine hiko me ngā pine whenua o ia wāhanga hei whakaiti i te haruru auau teitei.
Ngā Tātari Rerekētanga me ngā Tātari Aratau-Nui
Ka taea e te EMI te horapa mā roto i te pūtake hiko me ngā raina tohu. Hei aukati i te EMI kei uru, kei puta rānei i te PCB, whakamahia ngā tātari rerekētanga me ngā tātari aratau-noa. Mā ēnei tātari ka pehia ngā tohu hikohiko kāore e hiahiatia, me te kore e pā ki te mahi o te ara iahiko.
- Ngā Ārai Aratau-noaHe whai hua ēnei ki te tātari i te haruru aratau-noa me te tiaki i te EMI mai i ngā raina hiko.
- Ngā Pīra FerriteHe maha ngā wā ka whakamahia ngā pirepire ferite hei pehi i te haruru auau teitei i runga i ngā raina tohu me te hiko.
Kōwhiringa Rauemi PCBPCB
He mea nui te whiriwhiri i te rauemi PCB ki te mahi EMC. He pai ake ngā rauemi PCB auau-tiketike me ngā pūmau dielectric iti me ngā pātata iti-ngaronga mō ngā tono e hiahia ana ki ngā tohu tere-tiketike.
- Ngā Papanga Ngaronga-ItiWhakamahia ngā rauemi pēnei i a Rogers, ētahi atu paparanga iti-ngaronga rānei mō ngā tono auau-tiketike hei whakaiti i te hekenga tohu me te EMI.
Te Whakamātautau me te Whakatutuki i ngā Paerewa
Kia oti te hoahoa i tō PCB, he mea nui te whakamātautau kia mōhio ai kei te tutuki i ngā paerewa EMC, ā, kāore e pokanoa ki ētahi atu taputapu. Ko ngā paerewa pēnei i te raupapa IEC 61000 me ngā ture FCC Wāhanga 15 mō ngā taputapu hiko he mea e whakamahia whānuitia ana hei paearu mō te tutuki i ngā whakaritenga EMC.
- Whakamātautau EMCWhakahaerehia ngā whakamātautau tukunga me ngā whakamātautau ārai mate hei manatoko kei roto te PCB i ngā rohe e whakaaetia ana.
- Whakamana mā te WhakaariWhakamahia ngā taputapu whakatauira hei aromatawai i te whanonga hikohiko o te PCB, me te mahi i ngā whakarerekētanga i mua i te whakamātautau ā-tinana.
He mea nui te hoahoa i tētahi PCB e tutuki ana i te EMC i roto i te huihuinga PCB SMT hei whakarite i te pono me te mahi a ngā taputapu hiko hou. Mā te āta whakaaro ki te whenua, te tohatoha hiko, te arai i te hiko, te parepare, me te whiriwhiri rauemi, ka taea e ngā kaihangarau te whakaiti i te mōrearea o te EMI me te whakapai ake i te mahi whānui o ā rātou hua. Ahakoa kei te mahi koe me ngā PCB RF tere-teiteimā te whakauru i ēnei whakaaro matua ki roto i tō tukanga hoahoa ka hua ake he pūnaha pakari ake, he pūnaha pono ake hoki.
Mā te arotahi ki ēnei rautaki hoahoa nui mō te hototahi hikohiko, ka taea e koe te karo i ngā raruraru mahi, te whakaiti i ngā utu whakaputa, me te whakarite kia tutuki tō hua i ngā ture e tika ana. Ahakoa kei te whakawhanake koe i ngā PCB auau-tiketike, auau-iti rānei, me noho tonu te hoahoa EMC hei kaupapa matua hei whakarei ake i te mahi a te taputapu me te wheako kaiwhakamahi.
